St. Elsewhere, the home of Tommy Westphall, crossed into five series: Tattingers, Chicago Hope, Homicide: Life on the Street, Oz, and Method & Red. Chicago Hope, Homicide: Life on the Street, and Oz are connected in many ways before and after they crossed with St. Elsewhere.
Click the image for a better view. The series are placed closest to their strongest link and as close to chronological as possible.
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Dr. Elliot Axelrod from St. Elsewhere is a cousin of Kenny Axelrod from Tattingers. Tattingers was renamed to Nick & Hillary.
Tattingers did not have any other connections except a name change to Nick & Hillary.
Method & Red
Warren Coolidge from The White Shadow appeared in over twenty episodes of St. Elsewhere.◀ After joining St. Elsewhere, he appeared in Method & RedDa Shootout.
Dr. Mark Craig from St. Elsewehere received the Cushing Left Anterior Descending Artery Award on Samuels and the Kid as did Dr. Kathryn Austin from Chicago Hope on Women on the Verge.
Doctor Phillip Waters from Chicago Hope appeared in Picket FencesRebels with Causes.
Doctors Phillip Waters, Keith Wilkes, and Diane Grad from Chicago Hope appeared in Early EditionMum's the Word.
Douglas Wambaugh from Picket Fences appeared in Chicago HopeSmall Sacrifices.
Picket FencesAway In A Manger referenced Delta Glen and events of The X-FilesRed Museum that took place in Delta Glen.▼
Kelly Connell played Carter Pike on Picket Fences and C. Peck on Harryʼs LawOnward and Upward. Because Pike ≠ Peck, there was no crossover.
Early EditionPlay It Again, Sammo had an appearance of Sammo Law from Martial Law. Martial LawHonor Among Strangers continues in Walker, Texas RangerThe Day of Cleansing. Walker, Texas Ranger spun off Sons of Thunder.
Homicide: Life on the Street
from NBC, FOX, CBS, TF1 (France), NTV (Russia), ITV (United Kingdom), UPN, HBO, USA Network, and Netflix
Homicide: Life on the Street had three crossovers with Law & Order. Law & OrderCharm City continued in Homicide: Life on the StreetFor God and Country. Law & Order was followed by Homicide: Life on the Street in the episodes Baby, It's You and Sideshow on both series. Detective John Munch was on Homicide: Life on the Street during those crossovers.
Detective Munch was on Homicide: Life on the Street when he appeared in The X-FilesUnusual Suspects.▼
Law & Order and its three spin-offs based in New York city use the fictional newspaper The New York Ledger from Deadline. Exiled is the only film to spin off from Law & Order. Four spin offs are foreign adaptations with one in Paris, France; two in Moscow, Russia; and one in London, the United Kingdom. It also spun off Law & Order: Los Angeles.
Doctor Elizabeth Olivet from Law & Order appeared in New York UndercoverSmack Is Back, and Doctor Emil Skoda from Law & Order appeared in New York UndercoverMob Street.
After Detective John Munch moved to Law & Order: Special Victims Unit, he appeared in The BeatThey Say It's Your Birthday, Arrested DevelopmentExit Strategy▼, and The WireTook. In Lutherʼs fifth episode of the first season, John Luther mentions John Munch of Law & Order: Special Victims Unit by name and location.
Nicole Wallace, a recurring character on Law & Order: Criminal Intent, appeared in JoCatacombs under an assumed name. She is identified by her fingerprints.
There have been three crossovers between Law & Order: Special Victims Unit and the Chicago franchise.▼
The X-Files Xs
from FOX, CBS, and ABC
The graves of Nicholas and Diane Salinger from Party of Five are seen on The X-FilesMilagro. Party of Five spun off Time of Your Life.
Frank and Jordan Black from Millennium appeared in The X-FilesMillennium.
In Strange LuckStruck by Lightning, the character of Chance Harper's brother mentions Fox Mulder of The X-Files.
The X-Files spun off The Lone Gunmen along with two films and a revival miniseries.
The X Division from The X-Files was mentioned in FringeA New Day in the Old Town.▶
The X-Files used the red box Morley cigarettes often during its run; they became a character of sorts in the series. Morley first appeared in Beverly Hills 90210 and look similar to Marlboro.
from FOX and ABC
The airline in FringeThe Dreamscape is called Oceanic Air, the same airline flown by Richard and Alexis Castle in CastleIn Plane Sight.
In FringeFirefly, Doctor Walter Bishop says he is friends with Doctor Lawrence Jacoby from Twin Peaks. Bishop is wearing the same 3D glasses that Jacoby wears.▶
Twin Peaks spun off Twin Peaks: Fire Walk with Me and a 2017 revival with the same name. Dr. Jacoby from Twin Peaks appeared on General Hostpital. Red box Morley cigarettes appeared in Part 5 of the revival.
General Hostpital is part of the ABC Soap Opera Universe that includes ten series. I am not going to try to unravel all of the crossovers between them.
General Hospital spun off The Young Marrieds, Port Charles, and General Hospital: Night Shift.
One Life to Live
All My Children
Loving spun off The City.
Wilde Community Arrested
from FOX and NBC
The Bluth Company from Arrested Development appeared in Running WildeThe Pre-Nup. The Wilde Oil company from Running Wilde appeared in CommunityThe Psychology of Letting Go. A Bluth Company stair car appears in Captain America: Civil War.
The Marvel Cinematic Universe
The Marvel Cinematic Universe is a very large continuity that began in 2008 with Iron Man. There are a few crossovers that have crept into the MCU.
In Guardians of the Galaxy, Taneleer Tivan has collected many things including Howard the Duck and slugs from Slither.
Erin Lindsay from Chicago P.D. appeared in Law & Order: Special Victims UnitComic Perversion. On the same night, Odafin 'Fin' Tutuola and Amanda Rollins from Law & Order: Special Victims Unit appeared in Chicago P.D.Conventions.
The following year Chicago FireNobody Touches Anything continued on Law & Order: Special Victims UnitChicago Crossover and ended on Chicago P.D.They'll Have To Go Through Me.
Another three way crossover started with Chicago FireWe Called Her Jellybean, continued on Chicago P.D.The Number of Rats, and ended on Law & Order: Special Victims UnitDaydream Believer.
Law & Order: Special Victims UnitNationwide Manhunt ended on Chicago P.DThe Song of Gregory William Yates.
Detective Hailey Upton from Chicago P.D. appeared in FBIEmotional Rescue. FBI spun off FBI: Most Wanted.
St. Elsewhere has two connections to Oz, the fictional Weigert Medical Corporation and the character R.N. Carol Grace.
Oz is connected to Homicide: The Movie and The Beat through the fictional children's television program, Miss Sally's Schoolyard.
Red box Morley
from various networks
Red box Morley cigarettesʼ first known appearance is in Beverly Hills, 90210The Back Story. They can be seen in the following series. Only the first appearance is listed.
Beverly Hills 90120 spun off Melrose Place and 90210. Melrose Place spun off Models, Inc. and Melrose Place (2009).
ERBrothers and Sisters and Third WatchUnleashed crossed when Doctor Susan Lewis on ER got a call from her sister which prompts her to go to New York where she meets Detective Faith Yokas of Third Watch. Doctor Susan Lewis of ER and Detective Faith Yokas of Third Watch are in both episodes.
Third Watch> In the Family Way and Medical InvestigationHalf Life cross when an outbreak of Marburg brings the NIH team to New York. Doctors Stephen Connor and Natalie Durant from Medical Investigation appeared in Third Watch and Detective Faith Yokas, Carlos Nieto, and Holly Levine from Third Watch appeared in Medical Investigation.
Detective Faith Yokas is the only character to have been on all three series.
The blue meth from Breaking Bad appeared in The Walking DeadBloodletting. Breaking Bad spun off Better Call Saul. The Walking Dead spun off Fear the Walking Dead, however it is not contiguous with The Walking Dead.
from ABC, Showtime, FOX, and NBC
Happy Time Temp Agency from Dead Like Me was mentioned on Pushing DaisiesBzzzzzzzzz!. Dead Like Me spun off Dead Like Me: Life After Death.
Marianne Marie Beetle from WonderfallsMuffin Buffalo appeared in Pushing DaisiesComfort Food and Mockingbird Lane. Gretchen Speck-Horowitz from Wonderfalls appeared in HannibalAmuse-bouche under her maiden name Gretchen Speck.
News for the Detectives
The Los Angeles Tribune has created crossovers with many series.
At first I did not consider this a crossover; however, after seeing many screen shots, I was convinced these did cross with each other. The Tribune's title font changed somewhere between Lou Grant and Remington Steele. The font from Burke's Law and Lou Grant match; and the font from the rest, incluiding Burke's Law (1994), match. With the two fonts in the same franchise, I deduced the font must have changed.
from ABC and CBS
Burke's Law (1963) was renamed Amos Burke, Secret Agent in season three. It spun off Burke's Law (1994).
The titular character of Honey West appeared on Burke's Law (1963) Who Killed the Jackpot? and Burke's Law (1994) Who Killed Nick Hazard?.
Columbo spun off the non-contiguous Mrs. Columbo. Mrs. Columbo went through three name changes: Kate Columbo, Kate the Detective, and Kate Loves a Mystery.
from FOX, Showtime, and FX
24 spun off 24: Live Another Day and 24: Legacy. 24 uses a fake news company known as CNB that first appeared in Day 1: 5:00am — 6:00am. CNB has appeared in HomelandThe Star and in Tyrant second season. Howard Gordon worked on 24 and helmed the latter two series.
Max from Hart to Hart appeared on MoonlightingIt's a Wonderful Job. In the next Moonlighting episode, The Straight Poop, Pierce Brosnan from Remington Steele appeared as himself.
Lost in Alias
from ABC and NBC
Lost introduced the fictional Oceanic Airlines. The airline and its logo appeared in LAXSenator's Daughter, FlashForwardNo More Good Days, and Once Upon a TimeThe Stranger. Oceanic Airlines flight 815 from Lost was mentioned in ChuckChuck Versus the Helicopter, however the details around its destruction were inaccurate.▶
L.A.P.D. Police Sergeant Al Powell first appeared in Die Hard and then again in Die Hard 2. He reappeared almost two decades later in ChuckChuck Versus Santa Claus. Die Hard had three more sequels.
LostRaised by Another was the first appearance of Gannon Car Rentals. It appeared in Nip/TuckConor McMamara, 2026, HeroesThe Fix▼, and GleeThe New Rachel.
Lost had two minor crossovers with Alias. The fictional band Driveshaft from Lost got a minor mention in AliasAuthorized Personnel Only part 2. The flight that got lost in Lost was mentioned in AliasA Clean Conscience.
Alias introduced the fictional Credit Dauphine bank, and it appeared in Eli StoneThe Path.
Slusho! was introduced in AliasSo It Begins. It appeared in HeroesCautionary Tales and Truth or Consequences, Cloverfield, FringeThe Road Not Taken and A Better Human Being▼, Star Trek (2009)▼, and Super 8.
You can read more about Oceanic Airlines and find out why some do not cross over with Lost.
JAG was on NBC for one season before moving to CBS. It had been severed from Westphall because it used stock footage of Oceanic Airlines from the film Executive Decision not the logo from Lost. However, it later reentered Westphall through its spinoff NCIS.
Secretary of the Navy Edward Sheffield from JAG first appeared in First Monday in three episodes when he was a senator.
JAGIce Queen and Meltdown were the backdoor pilot for NCIS.
Kensi Blye from NCIS: Los Angeles appeared in Hawaii 5-0Ka Hakaka Maika'i. G. Callen and Sam Hannah from NCIS: Los Angeles appeared in Hawaii 5-0Pa Make Loa which concluded on NCIS: Los AngelesTouch of Death with Daniel Williams and Chin Ho Kelly from Hawaii 5-0 appearing.
Hetty Lange from NCIS: Los Angeles appeared in </Scorpion>True Colors.
Chin Ho Kelly, Kono Kalakaua, and Kamekona from Hawaii 5-0 appeared in MacGyver "Flashlight". MacGyver is a reboot of the ABC series of the same name.
From the first episode of Magnum P.I., I Saw the Sun Rise, characters from Hawaii 5-0 have crossed over. There have been twenty-two Magnum P.I. episodes with recurring characters from Hawaii Five-0.
There was a two-part crossover with Hawaii 5-0Ihea 'oe i ka wa a ka ua e loku ana? continuing on Magnum P.I.Desperate Measures.
Hawaii 5-0 used footage from Hawaii Five-OWooden Model of a Rat in its episode Kalele when Ed Asner reprised his character August March. The back story of the newer August March is different from the story in the original.
Another crossover was attempted between Hawaii 5-0 and Arrow. In ArrowThe Undertaking, there was a character named Dominic Alonzo. In Hawaii 5-0Ho'oilina there was a character with the same name. However, since the Dominic in Hawaii 5-0 dying eight years prior to the episode and the Dominic in Arrow being a year and a half earlier; they are not the same character.
EUReKA and Warehouse 13 had three crossovers. Douglas Fargo from EUReKA appeared in Warehouse 1313.1. Claudia Donovan from Warehouse 13 appeared in EUReKACrossing Over. Douglas Fargo also appeared in Warehouse 13Don't Hate the Player.
Dr. Vanessa Calder, who recurred on Warehouse 13, appeared in AlphasNever Let Me Go.
A M41A Pulse Rifle and USCM Smart Gun from Aliens appeared in Soldier. The soldier's service record shows he fought in the battles of Tannhauser Gate and Shoulder of Orion from Blade Runner, also the spinners from Blade Runner appeared in Soldier. Blade Runner is followed by Blade Runner 2049.
A Narcissus escape shuttle built by Weyland-Yutani from Alien, a Klingon Bird of Prey from Star Trek, and the Eagle from Space: 1999 appeared in Red DwarfPsirens in a shipyard of derelict ships.▼ Weyland-Yutani's logo and an Imperial shuttle from Star Wars appeared in FireflySerenity. A Holnist patch from The Postman can be seen on the shoulder of a dock worker on the Firefly film Serenity.
The Alien vs. Predator series serves as a prequel to the Alien series and a sequel to the Predator series. (The film Predators is not part of the Alien vs. Predator series.)
The Doublemeat Palace
Buffy Summers from Buffy the Vampire Slayer worked at the Doublemeat Palace owned by Guy Halveston, whose murder was investigated by Andy Barker, P.I. in Fairway, My Lovely. The Doublemeat Palace was previously mentioned in DexterTruth Be Told.
The shuttle craft Indiana Jones appeared in Star Trek: The Next GenerationEvolution. The San Francisco Register from Journeyman was the place of employment for Dan Vasser, and it appeared in Star Trek: The Next GenerationTime's Arrow.
Dr. Jackson Roykirk, introduced on Star TrekThe Changeling, appeared in Team Knight RiderApocalypse Maybe. Team Knight Rider spun off from Knight Rider.▼
The alien species from E.T. The Extra-Terrestrial appeared in Star Wars: The Phantom Menace.
from the BBC, CBBC, ITV, Disney, Nickelodeon, and TNT
Before various space ships appeared in Red Dwarf, the TARDIS from Doctor Who appeared in Red DwarfMarooned in the hanger of the ship. The TARDIS went on to appear in Chelmsford 123Arrivederci Roma, SherlockThe Hounds of Baskerville, and The LibrariansAnd the Final Curtain. Doc Brown's DeLorean from Back to the Future also appeared in And the Final Curtain.
Gallifrey from Doctor Who was mentioned by location and name on Rangers Lost GalaxyGreen Courage. Prior to that, the Teenage Mutant Ninja Turtles from Ninja Turtles: The Next Mutation appeared in Power Rangers in SpaceShell Shocked.
Arthur Dent from The Hitchhiker's Guide to the Galaxy was mentioned in Doctor WhoThe Christmas Invasion. Doctor Who has five spin-offs.
Note: The Power Rangers and Teenage Mutant Ninja Turtles are so convoluted, I'm not going to try to detangle them.
The Montecito Resort and Casino
from NBC, ABC, and BBC Two
The Montecito Resort and Casino was introduced in Las Vegas. When a network has a series that is set in a casino, every time another series needed one, you can guess where they went, in this case the Montecito.
Crossing Jordan crossed over with Las Vegas on several occassions. Crossing JordanWhat Happens in Vegas Dies in Boston continued in Las VegasTwo of a Kind. Crossing JordanLuck Be a Lady continued in Las VegasDouble Down, Triple Threat. There were episodes of each series which had appearances by characters from the other that did not share a story line with the other that week. Jordan Cavanaugh and Woody Hoyt of Crossing Jordan appeared in Las VegasHistory of Violins. Danny McCoy of Las Vegas appeared in Crossing JordanCrazy Little Thing Called Love.
On Las VegasThe Story Of Owe, the fictional company Dunder-Mifflin from The Office (U.S.) is mentioned. After the the people from Dunder-Mifflin went to the Montecito off screen, David Brent from The Office (U.K.) appeared in The Office (U.S.) The Seminar. The Sergio Georgini fashon line from The OfficeParty (U.K.) appeared in It's Always Sunny in PhiladelphiaA Very Sunny Christmas.
The Passions 20 and 23 May 2005 episodes were set in the Montecito with Mary Connell from Las Vegas appearing. Before characters from Passions gambled at the Montecito, Dr. Bombay from Bewitched appeared in Passions on 17 September 1999. Bewitched spun off Tabitha and a non-contiguous film of the same name.
On MediumMethod to His Madness, Allison Dubois was dreaming about a person who was gambling at the Montecito.
On HeroesCollision, the characters Hiro Nakamura and Ando Masahashi gamble at the Montecito. Heroes spun off Heroes Reborn.▼
On Knight Rider, the 2008 film, the characters Mike Traceur and Sarah Graiman met in the Montecito. Before Mike and Sarah met at the Montecito, the original Knight Rider series two part episode Mouth of the Snake introduced the character David Dalton who would go onto his own series Code of Vengeance.▼
A crossover was attempted between Las Vegas and Monk, however, the casino in Mr. Monk Goes to Vegas was called the Monticello not Montecito.
Are witches heroes? Are heroes witches? Is the fictional Allison Dubois a witch, hero, or both?
Made for television films will have the color of the network.
Series with two or more colors were on multiple networks. The main color is the series last network.